<?php // $Id$

// vim: expandtab sw=4 ts=4 sts=4:

/**
 * send message for some user in context of course
 *
 * @version     1.9 $Revision$
 * @copyright   2001-2008 Universite catholique de Louvain (UCL)
 * @author      Claroline Team <info@claroline.net>
 * @author      Christophe Mertens <thetotof@gmail.com>
 * @license     http://www.gnu.org/copyleft/gpl.html
 *              GNU GENERAL PUBLIC LICENSE version 2 or later
 * @package     internal_messaging
 */


    // initializtion
    require_once dirname(__FILE__) . '/../../claroline/inc/claro_init_global.inc.php';
    include claro_get_conf_repository() . 'CLMSG.conf.php';
    require_once dirname(__FILE__) . '/lib/message/messagetosend.lib.php';
    require_once dirname(__FILE__) . '/lib/recipient/userlistrecipient.lib.php';
    require_once get_path('incRepositorySys') . '/lib/group.lib.inc.php';
    require_once get_path('incRepositorySys') . '/lib/class.lib.php';
    require_once get_path('incRepositorySys') . '/lib/course_user.lib.php';
           
    claro_set_display_mode_available(true);
    
    // move to kernel
    $claroline = Claroline::getInstance();
    
    // ------------- Business Logic ---------------------------
    require_once 'lib/messagebox/inbox.lib.php';
    if (!claro_is_user_authenticated())
    {
        claro_disp_auth_form(true);
    }
        
    if (!claro_is_in_a_course() || (!claro_is_course_manager() && !claro_is_platform_admin()))
    {
        claro_die(get_lang("Not allowed"));
    }
    
    $displayForm = FALSE;
    $content = "";
    
    //commande
    $acceptedCmdList = array('exSendMessage');
    
    if (isset($_REQUEST['cmd']) && in_array($_REQUEST['cmd'], $acceptedCmdList))
    {
        if ($_REQUEST['cmd'] == 'exSendMessage')
        {
                    
            /*
             * Explode the values of incorreo in groups and users
             */
            $userIdList = array();
            $groupIdList = array();
            $classIdList = array();
            foreach($_REQUEST['incorreo'] as $thisIncorreo)
            {
                list($type, $elmtId) = explode(':', $thisIncorreo);
    
                switch($type)
                {
                    case 'CLASS':
                    $classIdList[] = $elmtId;
                    break;
                    
                    case 'GROUP':
                    $groupIdList[] = $elmtId;
                    break;
    
                    case 'USER':
                    $userIdList[] = $elmtId;
                    break;
                }
    
            } // end foreach
    
            /*
            * Select the students of the different groups
            */
            if ( !empty($classIdList) )
            {
                $userIdList = array_merge($userIdList,get_class_list_user_id_list($classIdList));
            }
            
            if ( !empty($groupIdList) )
            {
                $userIdList = array_merge($userIdList,get_group_list_user_id_list($groupIdList));
            }
            
            
            // subject
            $subject = $_REQUEST['subject'];
            if (empty($subject))
            {
               $subject .= get_lang('Message from your lecturer');
            }
            
    
            // content
            $body = $_REQUEST['content'];
    
            
             
            $message = new MessageToSend(claro_get_current_user_id(),$subject,$body);
            $message->setCourse(claro_get_current_course_id());
            
            $recipient = new UserListRecipient();
            $recipient->addUserIdList($userIdList);
            
            $recipient->sendMessage($message);
            
            $dialogBox = new DialogBox();
            $dialogBox->success( get_lang('Message sent') );
            
            if ( $failure = claro_failure::get_last_failure() )
            {
                $dialogBox->warning( $failure );
            }
    
            $dialogBox->info('<a href="' . $_SERVER['PHP_SELF'] . '">&lt;&lt;&nbsp;' . get_lang('Back') . '</a>');
            $content .= $dialogBox->render();
    
        } // end cmd exSendMessage
        
    }
    else
    {
        
        /*
        * Get user    list of    this course
        */

        $singleUserList = claro_get_course_user_list(claro_get_current_course_id());
        
        $userList = array();
    
        if ( is_array($singleUserList) && !empty($singleUserList) )
        {
            foreach ( $singleUserList as $singleUser  )
            {
                $userList[] = $singleUser;
            }
        }
    
        /*
        * Get group list of this course
        */
        $courseTableName = get_module_course_tbl(array('group_team','group_rel_team_user'));
        $sql = "SELECT `g`.`id`,
                       `g`.`name`,
                        COUNT(`gu`.`id`) AS `userNb`
                FROM `" . $courseTableName['group_team'] . "` AS `g` "
                . "LEFT JOIN `" . $courseTableName['group_rel_team_user'] . "` AS `gu`
                ON `g`.`id` = `gu`.`team`
                GROUP BY `g`.`id`";
    
        $groupSelect = claro_sql_query_fetch_all($sql);
    
        $groupList = array();
    
        if ( is_array($groupSelect) && !empty($groupSelect) )
        {
            foreach ( $groupSelect as $groupData  )
            {
                $groupList[] = $groupData;
            }
        }
        
        /*
         * Get class user list of this course
         */
        
        $classList = get_class_list_of_course(claro_get_current_course_id());
        $displayForm = TRUE;
    }
    
    // ------------ Prepare display --------------------
    if ($displayForm)
    {

        $claroline->display->header->addHtmlHeader( '<script type="text/javascript" language="JavaScript">
            
            <!-- Begin javascript menu swapper
            
            function move(fbox,    tbox)
            {
                var    arrFbox    = new Array();
                var    arrTbox    = new Array();
                var    arrLookup =    new    Array();
            
                var    i;
                for    (i = 0;    i <    tbox.options.length; i++)
                {
                    arrLookup[tbox.options[i].text]    = tbox.options[i].value;
                    arrTbox[i] = tbox.options[i].text;
                }
            
                var    fLength    = 0;
                var    tLength    = arrTbox.length;
            
                for(i =    0; i < fbox.options.length;    i++)
                {
                    arrLookup[fbox.options[i].text]    = fbox.options[i].value;
            
                    if (fbox.options[i].selected &&    fbox.options[i].value != "")
                    {
                        arrTbox[tLength] = fbox.options[i].text;
                        tLength++;
                    }
                    else
                    {
                        arrFbox[fLength] = fbox.options[i].text;
                        fLength++;
                    }
                }
            
                arrFbox.sort();
                arrTbox.sort();
                fbox.length    = 0;
                tbox.length    = 0;
            
                var    c;
                for(c =    0; c < arrFbox.length; c++)
                {
                    var    no = new Option();
                    no.value = arrLookup[arrFbox[c]];
                    no.text    = arrFbox[c];
                    fbox[c]    = no;
                }
                for(c =    0; c < arrTbox.length; c++)
                {
                    var    no = new Option();
                    no.value = arrLookup[arrTbox[c]];
                    no.text    = arrTbox[c];
                    tbox[c]    = no;
                }
            }
            
            function valida()
            {
                var f =    document.datos;
                var dat;
            
                var incorreo = f.elements[\'incorreo[]\'];
            
                if (incorreo.length <    1) {
                    alert("' . clean_str_for_javascript(get_lang('You must select some users')) . '");
                    return false;
                }
                for    (var i=0; i<incorreo.length; i++)
                    incorreo[i].selected = incorreo[i].checked = true
            
                dat=f.emailContent.value;
                if (dat.length == 0)
                {
                    //old: Debe    introducir el Texto    del    Mensaje
                    alert("' . clean_str_for_javascript(get_lang('You must introduce the message text')) . '");
                    f.emailContent.focus();
                    f.emailContent.select();
                    return false;
                }
            
                f.submit();
                return true;
            }
            
            //    End    -->
            </script>');
        
        $content .= get_lang('To send a message, select groups of users (marked with a * in the front) or single users from the list on the left.') . "<br/><br/>\n" ;
    
        $content .= '<div class="messagesform">'."\n";
        
        $content .= '<form method="post" action="' . $_SERVER['PHP_SELF'] . '" name="datos" '
        .    'onsubmit="return valida();">' . "\n"
        .    claro_form_relay_context()."\n"
        .    '<div class="userList">'."\n"
        .    '<input type="hidden" name="claroFormId" value="' . uniqid('') . '" />'."\n"
        .    '<input type="hidden" name="cmd" value="exSendMessage" />'."\n"
        .    '<table><tr><td>'."\n"
        .    get_lang('User list') . '<br/>'."\n"
        .    '<select name="nocorreo[]" size="15" multiple="multiple">' . "\n"
        ;
    
        if ( $groupList )
        {
            foreach( $groupList as $thisGroup )
            {
                $content .= '<option value="GROUP:' . $thisGroup['id'] . '">'
                .    '* ' . $thisGroup['name'] . ' (' . $thisGroup['userNb'] . ' ' . get_lang('Users') . ')'
                .    '</option>' . "\n";
            }
        }
        
        if ( $classList )
        {
            foreach( $classList as $thisClass )
            {
                $content .= '<option value="CLASS:' . $thisClass['id'] . '">'
                .    '* ' . $thisClass['name'] . ' ('. get_class_user_number($thisClass['id']) . ' ' . get_lang('Users')  . ')'
                .    '</option>' . "\n";
            }
        }
    
        $content .= '<option value="">'
        .    '---------------------------------------------------------'
        .    '</option>' . "\n"
        ;
    
        // display user list
    
        foreach ( $userList as $thisUser )
        {
            $content .= '<option value="USER:' . $thisUser['user_id'] . '">'
            .    ucwords(strtolower($thisUser['nom'] . ' ' . $thisUser['prenom']))
            .    '</option>' . "\n"
            ;
        }
    
        // WATCH OUT ! form elements are called by numbers "form.element[3]"...
        // because select name contains "[]" causing a javascript
        // element name problem List of selected users
    
        $content .= '</select></td>' . "\n"
        .    '<td>'
        .    '<input type="button" onclick="move(this.form.elements[\'nocorreo[]\'],this.form.elements[\'incorreo[]\'])" value="   >>   " /><br/><br/>' . "\n"
        .    '<input type="button" onclick="move(this.form.elements[\'incorreo[]\'],this.form.elements[\'nocorreo[]\'])" value="   <<   " />' . "\n"
        .    '</td>'
        .    '<td>'
        .    get_lang('Selected Users')."<br/>" . "\n"
        .    '<select name="incorreo[]" size="15" multiple="multiple" style="width:200" >'
        .    '</select>'."\n"
        .    '</td></tr></table>'."\n"
        .    '<div class="composeMessage">'."\n"
        .    '<br/>'.get_lang('Subject') . '<br />' . "\n"
        .    '<input type="text" name="subject" maxlength="255" size="40" />'
        .    '<br/>'.get_lang('Message') .'<br/>'. "\n"
        .    claro_html_textarea_editor('content', "")
        .    '<br/><input type="submit" name="submitMessage" value="' . get_lang('Submit') . '" />'
        .    '</div>'."\n"
        .    '</div>'."\n\n"
        .    '</form>'."\n\n"
        
        .    '</div>'
        ;
        
    }
    $claroline->display->body->appendContent(claro_html_tool_title(get_lang('Messages to selected users')));
    $claroline->display->body->appendContent($content);
    
    // ------------- Display page -----------------------------
    echo $claroline->display->render();
    // ------------- End of script ----------------------------
?>